﻿// Copyright 2016-2017 Datalust Pty Ltd
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

using System.IO;
using System.Linq;

namespace Datalust.ClefTool.Cli
{
    static class Printing
    {
        const int ConsoleWidth = 80;

        public static void Define(string term, string definition, int termColumnWidth, TextWriter output)
        {
            var header = term.PadRight(termColumnWidth);
            var right = ConsoleWidth - header.Length;

            var rest = definition.ToCharArray();
            while (rest.Any())
            {
                var content = new string(rest.Take(right).ToArray());
                if (!string.IsNullOrWhiteSpace(content))
                {
                    output.Write(header);
                    header = new string(' ', header.Length);
                    output.WriteLine(content);
                }
                rest = rest.Skip(right).ToArray();
            }
        }
    }
}
